Not sure if this has made the rounds yet or not, but this is totally awesome, and even the use of the wii IR's proves to work very very well... Watch and maybe we can all try and getting this working ourselves since he supplies the source code on his site!
http://www.youtube.com/watch?v=Jd3-eiid-Uw
http://www.youtube.com/watch?v=Jd3-eiid-Uw